<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt />
      </div>
      <!-- 登录表单区 -->
      <el-form :model="loginForm" label-width="0px" class="login_form" :rules="loginFormRules" ref="loginFormRef">
          <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" prefix-icon="iconfont icon-3702mima"></el-input>
        </el-form-item>
        <!-- 按钮区 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import { loginRequest } from '../api/login'
export default {
  data () {
    return {
    //   表单的绑定对象
      loginForm: {
        username: 'admin',
        password: '111111'
      },
      //   表单的验证规则
      loginFormRules: {
        //   验证用户名
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        //   验证密码
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 表单的重置
    resetLoginForm () {
    //   console.log(this)
      this.$refs.loginFormRef.resetFields()
    },
    // 提交表单前对整个表单进行验证
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        loginRequest(this.loginForm).then(res => {
          console.log(res.data)
          if (res.data.errcode === 4001) return this.$message.error('登录失败！')
          this.$message.success('登录成功')
          //   将登录后返回Token写入sessionStorage
          window.sessionStorage.setItem('token', res.data.token)
          this.$router.push('/home')
        })
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}

.btns {
    display: flex;
    justify-content: flex-end;
}

.login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding:  0 20px;
    box-sizing: border-box;
}
</style>
